Any product with mink oil are already making your boots able to resist most heavy rain you probably will be able to stand under. Leather itself are naturally water resistance to begin with and by conditioning it helps maintaining it. And water does not make your leather spoil instantly, it makes it DRY after going through rain and proper conditioning would be more than enough to keep your leather going strong again.
Leather does age and change colour over time. Conditioning will change the colour of the leather, no doubt but LP don't just darken the colour but flatten and dull the colour of the boots when use over period of time. There are a whole debate on reddit quite some time ago and it is really an interesting read. Although I feel the writer have over exaggerate certain stuff but to some degree there are certain important points to take note.
On Obenauf
and LP or whatever conditioner you put will not make your boots look more like a boots because it is
what you do with it not what you put on it.
LP is a great product, but not needed by most of us here for sure. One more thing is "baby" your boots does not mean I can't get the trashed look with sick patina. In my terms of "baby" a pair of boots means I choose product suitable for boots, making sure the leather are conditioned, periodically cleans it so dirt don't clog the leather and and have problems that might make my boots be permanently damaged is quickly rectify. And I think people who use LP and not expose to harsh condition are "babying" their work boots more.
Though I never feel that any of the lifestyle heritage range are work boots, and tbh they probably fail the safety test for work boots because they are NOT a true work boots to begin with. However, their good quality leather and strong stitching does make it possible to go through rough and harsh terrain.
I do agree saphir is not really needed but if they can afford it and wants the best for their boots then go ahead ! It is an awesome product anyway, definitely better than LP in my books.
JFYI, I used LP in the past because I felt the need to "protect" my boots but realize the colour is dull and flat after using it twice! Switch over to Red wings all natural boot oil and never looked back.
